Electromagnet.



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ELECTROMAGNET.

APPLICATION FILED SEPT.8. 1916. 1,231,193. Patented June 26,1917.

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CROSS RFERENCE C. C. POWERS. ELECTROMAGNET.

SEARCH RC APPLICATION FILED SEPT. 8, i916.

Patented June 26,1917.

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WITNESS STATES PATENT OFFICE.

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ARIZONA, ASSIGNOB OF ONE-THIRD TO JACK T.

'UTNIK AND ONE-m1) T0 LOUIS DE BOLD, BOTH 0F WILLIAMS, ARIZONA.

ELECTBOIAGNET.

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Specification of Letters Patent.' Patented June 26, 1917. A

Application led September 8, 1916. Serial No. 119,110.

Iball whom ztmay concern.'

Be it known that I, CHARLEs` C. POWERS, residing at Williams, in the county of Coconino and State of Arizona, have invented a new and Improved Electromagnet, of which the following is a specification.

M invention has for its object to provide an e ectro magnet of the solenoid type in which the core member is preferably in the form of an annulus or wheel-like structure und, to this end, the coil is wound in a novel manner back and forth on a ring-like tu` bular bobbin having its inner periphery slit to produce a space through which the supporting arms of the core may be moved, the core being 'designed to rotate around the exis of the magnet.

The invention provides means whereby a rotatable movable core (either in one plece or in a number of separate sections) may be employed in place of the conventional rec tilinearly movable core of the common type of solenoids.

In its more subordinate nature, the inven tion includes those novel features of construction, combination and arrangement of parts, all of which will be first fully described 'and then be specifically pointed out inthe appended claims, reference bein had to the accompanying drawing, in whic .Figure 1 is a detail perspective view of a portion of my electromagnet.

-Fig. 2 isua plan view of the core wheel and showing the coil element in horizontal y section.

Fig. 3 is an enlarged horizontal section on the line 3- 3 on Fig. 4.

Fig. 4 is a cross section onthe line 4-4 on Fig. 2, and

Fig. 5 1s a detail section on the hne 5-5 Fig. 6 is a. side elevation of a plurality of m et sets operating in connection with a sing e Shaft.

Fig. 7 is a top plan view of the same.

F' 8 is a detail view of a rectllmearly movlaile `core form of the invention.

In the in which like numerals of reference d ate like arts in all of the figures, it will observ that the coils are made (preferably) in section and successively energized by any suitable device of knownconstruction that may be employed core and be suitably fastened to the iron t'o form an integral structure. The core annulus is supported on the spider arms 4 which are attached to the shaft 1.

5 is an annular bobbin of insulating material having an inner peripheral slit 6 through which the arms 4 project, the core 2 being located within the bobbin 5' and adapted for motion within the same around the axis of the shaft 1. The coils, of which a suitable number is provided, are wound in a peculiar manner and constitute one of the essential features of the present invention. The wire for the coil is passed around the pins 9 and wound around the bobbin', from the upper side of thc slit 6 to the lower side, and is then passed around another pin 10 and carried back again around the bobbin tothe upper side of the slit as at 8, the coil ortion 8 being wound away from the bobin while the coil portion 7 is wound on or in contact with the bobbin. This method of winding is carried out in the successive coils, the terminal ends 11 of which are carried to a convenient place for connection withA the ener 'zing circuit.

As the .co' s are successively energized, the core will be drawnaround 1n a circular path and caused to rotate. If the current is alternately'reversed, an oscillating movement may be im arted to the coil.

One or more bbins and cores may be employed with the core spiders mounted on the shaft 1, one set above the other, see Figs. 6 and 7, and in this construction the coils of the several sets are staggered with relation to one another and alternate coil sets are energized together, so as to exert a continuous tongue or pull.

From the foregoing description taken in connection with the accompanying drawing,I

it is thought that the construction of the invention will be clear to those skilled in the art.

What I claim is:

l. In an electromagnet, a tubular bobbin having a slot, energizing coils wound back and forth on said bobbin from slot to slot, a core member movable in said bobbin and an arm carrying said core member and projecting through said slot and movable with relation to said coils. l

2. In an electromagnet, an annular tubular bobbin having an annular slot, energizing coils wound back and forth on said bobbin from slot to slot, a core member movable in said bobbin and an arm carrying said core member and projecting through said slot and rotatable around an axis, said core member comprising a plui ality vof sections of magnetic material "paced apart.

' 3. In an electromagnet, an annular tubular bobbin having an annular s1ot,.energiz ing coils wound back and forth on said bobbin from slot to slot, a core member movable in said bobbin and an arm carrying said core member and projecting through said slot and rotatable around an axis, said core member including a plurality 0 of sections of alternately magnetic and nonmagnetic material.

4. In an electromagnet, an annular tubular bobbin having an annular slot, energizing coils wound on said bobbin, a core member movable in said bobbin and an arm carrying said core member and projecting through said slot and rotatable around an axis, said coils being wound back and forth around said bobbin from slot to slot, alter,- nate turns beingwound close to the bobbin and the remainmg turns spaced away from the bobbin.

5. In an electromagnet, an annular tubular bobbin having an annular slot, energfzing coils wound on said bobbin, a core member movable in said bobbin and an arm carrying said core member and projecting' through said slotl and rotatable around an axis, said core member comprising a plurality of sections of magnetic material 5o spaced apart, said coils being wound back and forth around said bobbin from slot to slot, alternate turns being Wound close to the bobbin and the remaining turns spaced away from the bobbin.

6. In an electromagnet, an annular` tubular bobbin having an annular slot, energizing coils wound on said bobbin, a core member movable in said bobbin and an arm curryxmr said core member and projecting 60 through said slot and rotatable around an axis, said core member including a plurality of sections of alternately magnetic and nonmagnetic material, sai coils being Wound back and forth around said bobbin from .65 slot to slot, alternate turns being wound close to the bobbin and the remaining turns vspaced away from the bobbin.

CHARLES C. POWERS. 

